1.
Which process occurs in the mitochondria?
Correct Answer
B. Cellular respiration
Explanation
Cellular respiration is the correct answer because it is the process that occurs in the mitochondria. Mitochondria are known as the powerhouses of the cell and are responsible for producing energy in the form of ATP. During cellular respiration, glucose and oxygen are converted into carbon dioxide, water, and ATP. This process occurs in the mitochondria of eukaryotic cells and is essential for providing energy to the cell. Photosynthesis, on the other hand, occurs in the chloroplasts and is the process by which plants convert sunlight into energy. Therefore, the correct answer is cellular respiration.
2.
Which process occurs in the chloroplast?
Correct Answer
A. pHotosynthesis
Explanation
Photosynthesis is the process that occurs in the chloroplast. It is the process by which plants, algae, and some bacteria convert sunlight, carbon dioxide, and water into glucose and oxygen. This process takes place in the chloroplasts of plant cells, specifically in the thylakoid membranes. During photosynthesis, light energy is absorbed by chlorophyll, which then initiates a series of chemical reactions that result in the production of glucose and the release of oxygen. Therefore, photosynthesis is the correct answer as it is the primary function of chloroplasts.
3.
Which organism(s) perform cellular respiration?
Correct Answer
C. Plants and animals
Explanation
Plants and animals both perform cellular respiration. Cellular respiration is the process by which cells convert glucose and oxygen into energy, water, and carbon dioxide. This process occurs in the mitochondria of cells and is essential for the survival and functioning of all living organisms. Plants perform cellular respiration during the night or in the absence of sunlight when they cannot undergo photosynthesis. Animals, on the other hand, rely solely on cellular respiration to obtain energy from their food. Therefore, both plants and animals perform cellular respiration.
4.
How many molecules of glucose can be produced using 12 molecules of carbon dioxide?
Correct Answer
B. Two
Explanation
Glucose has the chemical formula C6H12O6, which means it contains 6 carbon atoms. Each molecule of carbon dioxide (CO2) contains 1 carbon atom. Therefore, to produce one molecule of glucose, 6 molecules of carbon dioxide are needed. Since we have 12 molecules of carbon dioxide, we can produce 2 molecules of glucose.
5.
What is the correct order for the steps in cellular respiration?
Correct Answer
D. Glycolysis, Kreb's cycle, electron transport system
Explanation
The correct order for the steps in cellular respiration is glycolysis, Kreb's cycle, and electron transport system. Glycolysis is the initial step in cellular respiration where glucose is broken down into pyruvate. The Kreb's cycle follows glycolysis and involves the oxidation of pyruvate to produce energy-rich molecules. Lastly, the electron transport system uses the energy from the previous steps to generate ATP, the main energy currency of the cell.
6.
What process is shown below?
Correct Answer
B. Calvin cycle
Explanation
The process shown in the image is the Calvin cycle. The Calvin cycle is a series of chemical reactions that take place in the chloroplasts of plants during photosynthesis. It converts carbon dioxide into glucose, using ATP and NADPH generated in the light-dependent reactions. This process is essential for the production of carbohydrates, which are used as a source of energy by the plant. The Kreb's cycle and electron transport system are involved in cellular respiration, not photosynthesis.
7.
Which process is shown above?
Correct Answer
C. Glycolysis
Explanation
The process shown above is glycolysis. Glycolysis is the first step in cellular respiration, where glucose is broken down into pyruvate. It occurs in the cytoplasm of the cell and does not require oxygen. This process produces a small amount of ATP and NADH, which can then be used in the later steps of cellular respiration to produce more energy.